But is this vast,potentially catastrophic,climate change the result of human behavior? Or is it simply the Earth s natural cycle of warming and cooling periods that have occurred since the planet formed? THE HISTORY CHANNEL offers an …[...]
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But is this vast,potentially catastrophic,climate change the result of human behavior? Or is it simply the Earth s natural cycle of warming and cooling periods that have occurred since the planet formed? THE HISTORY CHANNEL offers an …[...] | |||||